IM. -30,000 Ft Warm Core Low Aloft
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A vortex that is intensifying affects the winds up to 40,000 feet and above, and if
a vortex should happen to form south of Majuro and move fo a position south’ of Eniwetok
while intensifying, very bad weather accompmied by cumulo-nimbus and extensive decks of
alto-stratus and cirro-stratus clouds may be expected in the test area. Several examples
of this situation occurred during Operation Ivy., A good rule of thunb stotes that the
right semi-circle of the storm is the most dongerous, both for air and sea transportation
and for the fixed installations. Bikini and Eniwetok are situated just north of the usual
summer frocks for the vortices, so that fest operations in the period August to October
ore subject to hexard. |
As mentioned earlier, there is a slight secsonal ttndency ‘in the weather of the
Marshall Islands ond this we are now’ in a position to evalucte., The three classes of
weather situations can occur in any one month of the year and any one may socceed any
other., However, the low level cyclone situation tends to be more frequent between the
amonths of duly and November than during the rest of the year. ( ‘Georgio’ was on exception that shows how unreliahle this rule is.)
Similarly, the trode situation, while it
can occur af my fime of the year, is fo be expected more frequently during winter months. ,
- January, February, and March are probably the months of greatest expectation.. The upper